I think i have some pictures somewhere of some of the hack repairs i've come across in the past few years.. will post some if i find them.
I saw a pretty inventive one on a KISS that i repaired recently.. the connectors on the power supply, rather than the usual hard wire method for the burnt connectors that we've all seen, someone had wired in an EM style jones plug and socket for the 20 pin connector!! I was nearly gonna snap a pic of this but didn't get around to it. I didn't touch this connector as the game was in a customers home and i was called in to repair a sound board issue.